The film documents the real story of Lilly and Madelaine, 16-year-old twins from Hamburg, who were born 9 weeks too early. Madelaine had a hole in her heart, becoming weaker and weaker every day. While the doctors ran out of ideas on how to save her, a nurse had the idea to put the twins into the same incubator, where Lilly instantly hugged her sister. From this point on, Madelaine’s condition got better every day – her sister’s touch saved her life.